I just ran across a situation where I was playing Eggs but couldn't hatch any longer because my deck was already in the hatchery (long boss battle). I skipped the mandatory "hatch an egg" since I couldn't and then performed the optional "You may draw a card." But in retrospect, am I allowed to follow a "do all you can" approach like this to a card? Or should I have treated the Eggs like dead cards once I couldn't perform the mandatory "hatch an egg"?